属于乳腺癌的主要征象的是（）
A.漏斗征
B.阳性导管征
C.酒窝征
D.恶性钙化
E.彗星尾征
参考答案：D
—How do you study for a test?
—______ working with friends. [ ]
A. By
B. With
C. On
When the book, Twilight, was first _____, it was immediately well received by readers. [ ]
A. brought up
B. brought down
C. brought about
D. brought out
